[NRVR-Members] What are folks doing for buying new motor casing hardware now days?

[Bob Schoner]

My two cents. I certified L3 in 1999. I have flown 6 M motors in the 18
years since I certified. If I had gone with disposable motors I think I
would be ahead of the game. 75mm and 98mm hardware are expensive. I haven't
done the math but you have to fly a lot of M motors to make it worth the
cost of the hardware

Ask yourself how many times a year you are going to fly an M. Even double
it if you want to. I think you will find it is my ch more cost effective to
go with disposable motors IF THEY WORK FOR YOUR ROCKET.

There are other options like renting or borrowing hardware. But at this
point I would not recommend buying M motor hardware.

Bob
On Sat, Mar 11, 2017 at 9:50 PM Thomas Tweeks Weeks <
tweeks-junk2 at theweeks.org> wrote:

> Thanks for the useful info Jordan. I hadn't dug that far into all my
> options yet, but was just starting to weed through the motor selections to
> lift this big 32lb rocket for my L3 cert flight at LDRS. I was looking at a
> small M, 75mm single use.
>
>
>
> Initially I was thinking that I wouldn't use 75mm size motors that often
> back here in Blacksburg, and would just mainly fly on a 54mm adapter.
> However, at 32lbs it seems that not that much in 54mm will do the job on
> this bird (5:1 thrust requires an avg of 720N thrust, unless looking at
> VMax or white thunder).. so it's looking like 75mm is the most useful size
> motor for this thing.
>
>
>
> Maybe 75mm CTI hardware will work just fine.
>
>
>
> Comments or related thoughts welcome.
>
>
>
> Tweeks
>
>
>
> On Saturday, March 11, 2017 6:42am, "Jordan Truesdell" <
> jordan at truesdell.org> said:
>
> CTI Hardware for 75mm was built specifically to fly Aero tech reloads. It
> was developed for the (military/scientific?) community when AT had their
> production stoppage. There are physical differences - I presume to
> circumvent patents - which requires an additional o-ring of standard size,
> avail at Amazon for under $1 each in qty 5. But there is no functional
> difference.
> I decided to skip 54mm HW and just fly big 38s with an adapter. (tho I
> have CTI HW, so who knows what will come of that)
> Jordan
>
> On Mar 11, 2017 2:19 AM, "Thomas Tweeks Weeks" <tom at theweeks.org> wrote:
>
> Hey all..
>
>
>
> So I'm in the market for 54 and 75mm motor hardware for my new big bird..
> and am just wondering.. is anyone buying Cesaroni any more? I really like
> Cesaroni since they first came out with the ProX line. I mean Aerotech is
> okay.. but they sure are messy (compared to the Aerotech 54mm anyway).
>
>
>
> But I was thinking about just doing my L3 on a single use small M
> Aerotech.. and continue using single use 54/75mm until the news is in on
> Cesaroni..
>
>
>
> Thoughts?
>
>
>
> Tweeks
>
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